Home / 12,774.12-17,623.08-8,790

Finding the Fourth Proportional to 12,774.12, 17,623.08 and 8,790

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Solution

The fourth proportional to 12,774.12, 17,623.08 and 8,790 is: 12,126.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,774.12 : 17,623.08 = 8,790 : x
  2. Step 2: Convert to fraction form
    12,774.12/17,623.08 = 8,790/x
  3. Step 3: Cross multiply
    12,774.12x = 17,623.08 × 8,790
  4. Step 4: Simplify right side
    12,774.12x = 154,906,873.20
  5. Step 5: Solve for x
    x = 154,906,873.20/12,774.12
  6. Step 6: Final answer
    x = 12,126.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.